| Boiling Point | 54–55°C |
| Melting Point | -50°C |
| Vapor Pressure | 253 hPa (20°C) |
| Density | 0.706 g/cm³ |
| pH | 13 (20°C, 100 g/L in H₂O) |
| Flash Point | -28°C (closed cup) † |
| Assay Percent Range | ≥99% |
| Linear Formula | (C₂H₅)₂NH (C₄H₁₁N) |
| Formula Weight | 73.14 |
| Physical Form | Liquid |
| Chemical Name or Material | Diethylamine |
| Molecular Weight | 73.14 g/mol |
| SMILES String | N(CC)CC |
| Solubility Information | Miscible with water,alcohol,ether,chloroform and carbon terachloride. |
| Sensitivity | Air Sensitive |
| Beilstein | 605268 |
| Refractive Index | 1.385 |
| Assay | ≥99% (GC) |
| Explosion Limit | 2.0–11.8% v/v |
| CAS Number | 109-89-7 |
| Storage Temperature | 2–30°C |
| EC Number | 203-716-3 |
| NACRES | NA.22 |
| UNSPSC Code | 12352116 |
| MDL Number | MFCD00009032 |
| Quality Segment | 200 |
| InChI | 1S/C4H11N/c1-3-5-4-2/h5H,3-4H2,1-2H3 |
| InChI Key | HPNMFZURTQLUMO-UHFFFAOYSA-N |
| Autoignition Temperature | 290°C |
| LD50, Oral (Rat) | 540 mg/kg |
| LD50, Dermal (Rabbit) | 582 mg/kg |
| 8021 |
Diethylamine is the simplest symmetrical secondary amine built from two ethyl groups attached to a single nitrogen atom, giving it a pungent, ammoniacal odor typical of low-molecular-weight amines. It is fully miscible with water and most common organic solvents, and its lone-pair-bearing nitrogen makes it a strong base and effective nucleophile, readily reacting with acids, acid chlorides, and electrophilic carbon centers. The compound is quite volatile at room temperature and is sensitive to air and moisture over time, which is why Sarchem Labs packages and stores it under tightly controlled, sealed conditions.
Because of its small size and high reactivity, diethylamine behaves predictably in stoichiometric reactions, making it a convenient amine source when a controlled, well-characterized reagent is required.
In industrial chemistry, diethylamine functions primarily as a reactive intermediate: a starting material for rubber-processing accelerators, incorporated into agrochemical actives including the insect repellent DEET, and a building block in corrosion-inhibitor and specialty amine formulations.
Beyond bulk industrial synthesis, diethylamine appears repeatedly in analytical and materials research — chemiresistive sensor coatings, supercritical fluid chromatography packing materials, silver-silica nanoparticle synthesis for cancer theranostics research, and stereoselective chromatographic methods for forensic/clinical toxicology.
Diethylamine carries a serious hazard profile and must be handled with full respect for its flammability, corrosivity, and acute toxicity. This information is presented in full and should not be treated as routine.
Signal Word: Danger
GHS Pictograms: GHS02 (Flame), GHS05 (Corrosion), GHS06 (Skull and Crossbones)
Hazard Classifications: Flammable Liquid Cat. 2, Skin Corrosion Cat. 1A, Eye Damage Cat. 1, Acute Toxicity (Oral) Cat. 3, Acute Toxicity (Dermal) Cat. 3, Acute Toxicity (Inhalation) Cat. 4, STOT-SE Cat. 3 (respiratory irritation)
Hazard Statements:
Precautionary Statements: P210, P233, P280, P303+P361+P353, P304+P340+P310, P305+P351+P338
Target Organs: Respiratory system
Storage Class: 3 — Flammable liquids
Water Hazard Class (WGK): 1
Recommended PPE: Chemical-resistant gloves, tightly sealed chemical splash goggles or a full face shield, and flame-resistant protective clothing. Use only in a well-ventilated area or fume hood. Because the liquid causes severe skin and eye burns, an emergency eyewash station and safety shower should be accessible, and all ignition sources should be eliminated given its Category 2 flammability.
